/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.
 
This file is part of Quake III Arena source code.
 
Quake III Arena source code is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
 
Quake III Arena source code is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with Foobar; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
===========================================================================
*/
// console.c

#include "client.h"


int g_console_field_width = 78;


#define	NUM_CON_TIMES 4

#define		CON_TEXTSIZE	32768
typedef struct
{
    qboolean	initialized;

    short	text[CON_TEXTSIZE];
    int		current;		// line where next message will be printed
    int		x;				// offset in current line for next print
    int		display;		// bottom of console displays this line

    int 	linewidth;		// characters across screen
    int		totallines;		// total lines in console scrollback

    float	xadjust;		// for wide aspect screens

    float	displayFrac;	// aproaches finalFrac at scr_conspeed
    float	finalFrac;		// 0.0 to 1.0 lines of console to display

    int		vislines;		// in scanlines

    int		times[NUM_CON_TIMES];	// cls.realtime time the line was generated
    // for transparent notify lines
    vec4_t	color;
}
console_t;

extern	console_t	con;

console_t	con;

cvar_t		*con_conspeed;
cvar_t		*con_notifytime;

#define	DEFAULT_CONSOLE_WIDTH	78

vec4_t	console_color = {1.0, 1.0, 1.0, 1.0};


/*
================
Con_ToggleConsole_f
================
*/
void Con_ToggleConsole_f (void)
{
    // closing a full screen console restarts the demo loop
    if ( cls.state == CA_DISCONNECTED && cls.keyCatchers == KEYCATCH_CONSOLE )
    {
        CL_StartDemoLoop();
        return;
    }

    Field_Clear( &g_consoleField );
    g_consoleField.widthInChars = g_console_field_width;

    Con_ClearNotify ();
    cls.keyCatchers ^= KEYCATCH_CONSOLE;
}

/*
================
Con_MessageMode_f
================
*/
void Con_MessageMode_f (void)
{
    chat_playerNum = -1;
    chat_team = qfalse;
    Field_Clear( &chatField );
    chatField.widthInChars = 30;

    cls.keyCatchers ^= KEYCATCH_MESSAGE;
}

/*
================
Con_MessageMode2_f
================
*/
void Con_MessageMode2_f (void)
{
    chat_playerNum = -1;
    chat_team = qtrue;
    Field_Clear( &chatField );
    chatField.widthInChars = 25;
    cls.keyCatchers ^= KEYCATCH_MESSAGE;
}

/*
================
Con_MessageMode3_f
================
*/
void Con_MessageMode3_f (void)
{
    chat_playerNum = CG_CrosshairPlayer();
    if ( chat_playerNum < 0 || chat_playerNum >= MAX_CLIENTS )
    {
        chat_playerNum = -1;
        return;
    }
    chat_team = qfalse;
    Field_Clear( &chatField );
    chatField.widthInChars = 30;
    cls.keyCatchers ^= KEYCATCH_MESSAGE;
}

/*
================
Con_MessageMode4_f
================
*/
void Con_MessageMode4_f (void)
{
    chat_playerNum = CG_LastAttacker();
    if ( chat_playerNum < 0 || chat_playerNum >= MAX_CLIENTS )
    {
        chat_playerNum = -1;
        return;
    }
    chat_team = qfalse;
    Field_Clear( &chatField );
    chatField.widthInChars = 30;
    cls.keyCatchers ^= KEYCATCH_MESSAGE;
}

/*
================
Con_Clear_f
================
*/
void Con_Clear_f (void)
{
    int		i;

    for ( i = 0 ; i < CON_TEXTSIZE ; i++ )
    {
        con.text[i] = (ColorIndex(COLOR_WHITE)<<8) | ' ';
    }

    Con_Bottom();		// go to end
}


/*
================
Con_Dump_f
 
Save the console contents out to a file
================
*/
void Con_Dump_f (void)
{
    int		l, x, i;
    short	*line;
    fileHandle_t	f;
    char	buffer[1024];

    if (Cmd_Argc() != 2)
    {
        Com_Printf ("usage: condump <filename>\n");
        return;
    }

    Com_Printf ("Dumped console text to %s.\n", Cmd_Argv(1) );

    f = FS_FOpenFileWrite( Cmd_Argv( 1 ) );
    if (!f)
    {
        Com_Printf ("ERROR: couldn't open.\n");
        return;
    }

    // skip empty lines
    for (l = con.current - con.totallines + 1 ; l <= con.current ; l++)
    {
        line = con.text + (l%con.totallines)*con.linewidth;
        for (x=0 ; x<con.linewidth ; x++)
            if ((line[x] & 0xff) != ' ')
                break;
        if (x != con.linewidth)
            break;
    }

    // write the remaining lines
    buffer[con.linewidth] = 0;
    for ( ; l <= con.current ; l++)
    {
        line = con.text + (l%con.totallines)*con.linewidth;
        for(i=0; i<con.linewidth; i++)
            buffer[i] = line[i] & 0xff;
        for (x=con.linewidth-1 ; x>=0 ; x--)
        {
            if (buffer[x] == ' ')
                buffer[x] = 0;
            else
                break;
        }
        strcat( buffer, "\n" );
        FS_Write(buffer, strlen(buffer), f);
    }

    FS_FCloseFile( f );
}


/*
================
Con_ClearNotify
================
*/
void Con_ClearNotify( void )
{
    int		i;

    for ( i = 0 ; i < NUM_CON_TIMES ; i++ )
    {
        con.times[i] = 0;
    }
}



/*
================
Con_CheckResize
 
If the line width has changed, reformat the buffer.
================
*/
void Con_CheckResize (void)
{
    int		i, j, width, oldwidth, oldtotallines, numlines, numchars;
    MAC_STATIC short	tbuf[CON_TEXTSIZE];

    width = (SCREEN_WIDTH / SMALLCHAR_WIDTH) - 2;

    if (width == con.linewidth)
        return;

    if (width < 1)			// video hasn't been initialized yet
    {
        width = DEFAULT_CONSOLE_WIDTH;
        con.linewidth = width;
        con.totallines = CON_TEXTSIZE / con.linewidth;
        for(i=0; i<CON_TEXTSIZE; i++)

            con.text[i] = (ColorIndex(COLOR_WHITE)<<8) | ' ';
    }
    else
    {
        oldwidth = con.linewidth;
        con.linewidth = width;
        oldtotallines = con.totallines;
        con.totallines = CON_TEXTSIZE / con.linewidth;
        numlines = oldtotallines;

        if (con.totallines < numlines)
            numlines = con.totallines;

        numchars = oldwidth;

        if (con.linewidth < numchars)
            numchars = con.linewidth;

        Com_Memcpy (tbuf, con.text, CON_TEXTSIZE * sizeof(short));
        for(i=0; i<CON_TEXTSIZE; i++)

            con.text[i] = (ColorIndex(COLOR_WHITE)<<8) | ' ';


        for (i=0 ; i<numlines ; i++)
        {
            for (j=0 ; j<numchars ; j++)
            {
                con.text[(con.totallines - 1 - i) * con.linewidth + j] =
                    tbuf[((con.current - i + oldtotallines) %
                          oldtotallines) * oldwidth + j];
            }
        }

        Con_ClearNotify ();
    }

    con.current = con.totallines - 1;
    con.display = con.current;
}


/*
================
Con_Init
================
*/
void Con_Init (void)
{
    int		i;

    con_notifytime = Cvar_Get ("con_notifytime", "3", 0);
    con_conspeed = Cvar_Get ("scr_conspeed", "3", 0);

    Field_Clear( &g_consoleField );
    g_consoleField.widthInChars = g_console_field_width;
    for ( i = 0 ; i < COMMAND_HISTORY ; i++ )
    {
        Field_Clear( &historyEditLines[i] );
        historyEditLines[i].widthInChars = g_console_field_width;
    }

    Cmd_AddCommand ("toggleconsole", Con_ToggleConsole_f);
    Cmd_AddCommand ("messagemode", Con_MessageMode_f);
    Cmd_AddCommand ("messagemode2", Con_MessageMode2_f);
    Cmd_AddCommand ("messagemode3", Con_MessageMode3_f);
    Cmd_AddCommand ("messagemode4", Con_MessageMode4_f);
    Cmd_AddCommand ("clear", Con_Clear_f);
    Cmd_AddCommand ("condump", Con_Dump_f);
}


/*
===============
Con_Linefeed
===============
*/
void Con_Linefeed (qboolean skipnotify)
{
    int		i;

    // mark time for transparent overlay
    if (con.current >= 0)
    {
        if (skipnotify)
            con.times[con.current % NUM_CON_TIMES] = 0;
        else
            con.times[con.current % NUM_CON_TIMES] = cls.realtime;
    }

    con.x = 0;
    if (con.display == con.current)
        con.display++;
    con.current++;
    for(i=0; i<con.linewidth; i++)
        con.text[(con.current%con.totallines)*con.linewidth+i] = (ColorIndex(COLOR_WHITE)<<8) | ' ';
}

/*
================
CL_ConsolePrint
 
Handles cursor positioning, line wrapping, etc
All console printing must go through this in order to be logged to disk
If no console is visible, the text will appear at the top of the game window
================
*/
void CL_ConsolePrint( char *txt )
{
    int		y;
    int		c, l;
    int		color;
    qboolean skipnotify = qfalse;		// NERVE - SMF
    int prev;							// NERVE - SMF

    // TTimo - prefix for text that shows up in console but not in notify
    // backported from RTCW
    if ( !Q_strncmp( txt, "[skipnotify]", 12 ) )
    {
        skipnotify = qtrue;
        txt += 12;
    }

    // for some demos we don't want to ever show anything on the console
    if ( cl_noprint && cl_noprint->integer )
    {
        return;
    }

    if (!con.initialized)
    {
        con.color[0] =
            con.color[1] =
                con.color[2] =
                    con.color[3] = 1.0f;
        con.linewidth = -1;
        Con_CheckResize ();
        con.initialized = qtrue;
    }

    color = ColorIndex(COLOR_WHITE);

    while ( (c = *txt) != 0 )
    {
        if ( Q_IsColorString( txt ) )
        {
            color = ColorIndex( *(txt+1) );
            txt += 2;
            continue;
        }

        // count word length
        for (l=0 ; l< con.linewidth ; l++)
        {
            if ( txt[l] <= ' ')
            {
                break;
            }

        }

        // word wrap
        if (l != con.linewidth && (con.x + l >= con.linewidth) )
        {
            Con_Linefeed(skipnotify);

        }

        txt++;

        switch (c)
        {
        case '\n':
            Con_Linefeed (skipnotify);
            break;
        case '\r':
            con.x = 0;
            break;
        default:	// display character and advance
            y = con.current % con.totallines;
            con.text[y*con.linewidth+con.x] = (color << 8) | c;
            con.x++;
            if (con.x >= con.linewidth)
            {
                Con_Linefeed(skipnotify);
                con.x = 0;
            }
            break;
        }
    }


    // mark time for transparent overlay
    if (con.current >= 0)
    {
        // NERVE - SMF
        if ( skipnotify )
        {
            prev = con.current % NUM_CON_TIMES - 1;
            if ( prev < 0 )
                prev = NUM_CON_TIMES - 1;
            con.times[prev] = 0;
        }
        else
            // -NERVE - SMF
            con.times[con.current % NUM_CON_TIMES] = cls.realtime;
    }
}


/*
==============================================================================
 
DRAWING
 
==============================================================================
*/


/*
================
Con_DrawInput
 
Draw the editline after a ] prompt
================
*/
void Con_DrawInput (void)
{
    int		y;

    if ( cls.state != CA_DISCONNECTED && !(cls.keyCatchers & KEYCATCH_CONSOLE ) )
    {
        return;
    }

    y = con.vislines - ( SMALLCHAR_HEIGHT * 2 );

    RE_SetColor( con.color );

    SCR_DrawSmallChar( con.xadjust + 1 * SMALLCHAR_WIDTH, y, ']' );

    Field_Draw( &g_consoleField, con.xadjust + 2 * SMALLCHAR_WIDTH, y, SCREEN_WIDTH - 3 * SMALLCHAR_WIDTH, qtrue );
}


/*
================
Con_DrawNotify
 
Draws the last few lines of output transparently over the game top
================
*/
void Con_DrawNotify (void)
{
    int		x, v;
    short	*text;
    int		i;
    int		time;
    int		skip;
    int		currentColor;

    currentColor = 7;
    RE_SetColor( g_color_table[currentColor] );

    v = 0;
    for (i= con.current-NUM_CON_TIMES+1 ; i<=con.current ; i++)
    {
        if (i < 0)
            continue;
        time = con.times[i % NUM_CON_TIMES];
        if (time == 0)
            continue;
        time = cls.realtime - time;
        if (time > con_notifytime->value*1000)
            continue;
        text = con.text + (i % con.totallines)*con.linewidth;

        if (cl.snap.ps.pm_type != PM_INTERMISSION && cls.keyCatchers & (KEYCATCH_UI | KEYCATCH_CGAME) )
        {
            continue;
        }

        for (x = 0 ; x < con.linewidth ; x++)
        {
            if ( ( text[x] & 0xff ) == ' ' )
            {
                continue;
            }
            if ( ( (text[x]>>8)&7 ) != currentColor )
            {
                currentColor = (text[x]>>8)&7;
                RE_SetColor( g_color_table[currentColor] );
            }
            SCR_DrawSmallChar( cl_conXOffset->integer + con.xadjust + (x+1)*SMALLCHAR_WIDTH, v, text[x] & 0xff );
        }

        v += SMALLCHAR_HEIGHT;
    }

    RE_SetColor( NULL );

    if (cls.keyCatchers & (KEYCATCH_UI | KEYCATCH_CGAME) )
    {
        return;
    }

    // draw the chat line
    if ( cls.keyCatchers & KEYCATCH_MESSAGE )
    {
        if (chat_team)
        {
            SCR_DrawBigString (8, v, "say_team:", 1.0f );
            skip = 11;
        }
        else
        {
            SCR_DrawBigString (8, v, "say:", 1.0f );
            skip = 5;
        }

        Field_BigDraw( &chatField, skip * BIGCHAR_WIDTH, v,
                       SCREEN_WIDTH - ( skip + 1 ) * BIGCHAR_WIDTH, qtrue );

        v += BIGCHAR_HEIGHT;
    }

}

/*
================
Con_DrawSolidConsole
 
Draws the console with the solid background
================
*/
void Con_DrawSolidConsole( float frac )
{
    int				i, x, y;
    int				rows;
    short			*text;
    int				row;
    int				lines;
//	qhandle_t		conShader;
    int				currentColor;
    vec4_t			color;

    lines = cls.glconfig.vidHeight * frac;
    if (lines <= 0)
        return;

    if (lines > cls.glconfig.vidHeight )
        lines = cls.glconfig.vidHeight;

    // on wide screens, we will center the text
    con.xadjust = 0;
    SCR_AdjustFrom640( &con.xadjust, NULL, NULL, NULL );

    // draw the background
    y = frac * SCREEN_HEIGHT - 2;
    if ( y < 1 )
    {
        y = 0;
    }
    else
    {
        SCR_DrawPic( 0, 0, SCREEN_WIDTH, y, cls.consoleShader );
    }

    color[0] = 1;
    color[1] = 0;
    color[2] = 0;
    color[3] = 1;
    SCR_FillRect( 0, y, SCREEN_WIDTH, 2, color );


    // draw the version number

    RE_SetColor( g_color_table[ColorIndex(COLOR_RED)] );

    i = strlen( Q3_VERSION );

    for (x=0 ; x<i ; x++)
    {

        SCR_DrawSmallChar( cls.glconfig.vidWidth - ( i - x ) * SMALLCHAR_WIDTH,

                           (lines-(SMALLCHAR_HEIGHT+SMALLCHAR_HEIGHT/2)), Q3_VERSION[x] );

    }


    // draw the text
    con.vislines = lines;
    rows = (lines-SMALLCHAR_WIDTH)/SMALLCHAR_WIDTH;		// rows of text to draw

    y = lines - (SMALLCHAR_HEIGHT*3);

    // draw from the bottom up
    if (con.display != con.current)
    {
        // draw arrows to show the buffer is backscrolled
        RE_SetColor( g_color_table[ColorIndex(COLOR_RED)] );
        for (x=0 ; x<con.linewidth ; x+=4)
            SCR_DrawSmallChar( con.xadjust + (x+1)*SMALLCHAR_WIDTH, y, '^' );
        y -= SMALLCHAR_HEIGHT;
        rows--;
    }

    row = con.display;

    if ( con.x == 0 )
    {
        row--;
    }

    currentColor = 7;
    RE_SetColor( g_color_table[currentColor] );

    for (i=0 ; i<rows ; i++, y -= SMALLCHAR_HEIGHT, row--)
    {
        if (row < 0)
            break;
        if (con.current - row >= con.totallines)
        {
            // past scrollback wrap point
            continue;
        }

        text = con.text + (row % con.totallines)*con.linewidth;

        for (x=0 ; x<con.linewidth ; x++)
        {
            if ( ( text[x] & 0xff ) == ' ' )
            {
                continue;
            }

            if ( ( (text[x]>>8)&7 ) != currentColor )
            {
                currentColor = (text[x]>>8)&7;
                RE_SetColor( g_color_table[currentColor] );
            }
            SCR_DrawSmallChar(  con.xadjust + (x+1)*SMALLCHAR_WIDTH, y, text[x] & 0xff );
        }
    }

    // draw the input prompt, user text, and cursor if desired
    Con_DrawInput ();

    RE_SetColor( NULL );
}



/*
==================
Con_DrawConsole
==================
*/
void Con_DrawConsole( void )
{
    // check for console width changes from a vid mode change
    Con_CheckResize ();

    // if disconnected, render console full screen
    if ( cls.state == CA_DISCONNECTED )
    {
        if ( !( cls.keyCatchers & (KEYCATCH_UI | KEYCATCH_CGAME)) )
        {
            Con_DrawSolidConsole( 1.0 );
            return;
        }
    }

    if ( con.displayFrac )
    {
        Con_DrawSolidConsole( con.displayFrac );
    }
    else
    {
        // draw notify lines
        if ( cls.state == CA_ACTIVE )
        {
            Con_DrawNotify ();
        }
    }
}

//================================================================

/*
==================
Con_RunConsole
 
Scroll it up or down
==================
*/
void Con_RunConsole (void)
{
    // decide on the destination height of the console
    if ( cls.keyCatchers & KEYCATCH_CONSOLE )
        con.finalFrac = 0.5;		// half screen
    else
        con.finalFrac = 0;				// none visible

    // scroll towards the destination height
    if (con.finalFrac < con.displayFrac)
    {
        con.displayFrac -= con_conspeed->value*cls.realFrametime*0.001;
        if (con.finalFrac > con.displayFrac)
            con.displayFrac = con.finalFrac;

    }
    else if (con.finalFrac > con.displayFrac)
    {
        con.displayFrac += con_conspeed->value*cls.realFrametime*0.001;
        if (con.finalFrac < con.displayFrac)
            con.displayFrac = con.finalFrac;
    }

}


void Con_PageUp( void )
{
    con.display -= 2;
    if ( con.current - con.display >= con.totallines )
    {
        con.display = con.current - con.totallines + 1;
    }
}

void Con_PageDown( void )
{
    con.display += 2;
    if (con.display > con.current)
    {
        con.display = con.current;
    }
}

void Con_Top( void )
{
    con.display = con.totallines;
    if ( con.current - con.display >= con.totallines )
    {
        con.display = con.current - con.totallines + 1;
    }
}

void Con_Bottom( void )
{
    con.display = con.current;
}


void Con_Close( void )
{
    if ( !com_cl_running->integer )
    {
        return;
    }
    Field_Clear( &g_consoleField );
    Con_ClearNotify ();
    cls.keyCatchers &= ~KEYCATCH_CONSOLE;
    con.finalFrac = 0;				// none visible
    con.displayFrac = 0;
}
